Type-writing machine



(No Model.)

, 2 Sheets-Sheet 1. T. HALL TYPE WRITING MACHINE.

No. 453,593. Patented June 2,1891.

nova 00.00.

\uuoag-c IIIQIII.

noncon- (No Madel.) 2 Sheets-Sheet 2. T. HALL.

TYPE WRITING MACHINE.

No. 453,598. Patented June 2,1891.

UNITED STATES PATENT OFFICE.

THOMAS HALL, OF LYNDIIURST, NEW JERSEY, ASSIGNOR TO THE THOMAS HALLCOMPANY OF NEIV JERSEY.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 453,593, dated June 2,1891. Application filed November 13, 1886. Serial No. 218.813. N0model.) Patented in England November 12, 1886, No. 14,675.

To all whom it may concern:

Be it known thatl, THOMAS HALL, a citizen of the United States, residingat Lyndhurst, in the county of Bergen and State of New J ersey, haveinvented certain new and useful Improvements in Type-lVriting Machines,(for which I obtained Letters Patent in Great Britain,No. 14,675,bearing date November 12, 1886;) and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same.

My invention is designed to make an instrument of but few parts capableof printing a large number of characters.

The accompanying drawings show the detail of the mechanism, Figure 1being a plan with part of index-plate removed. Fig. 2 shows a sectionalelevation from left-hand end. Fig. 3 is asectional plan showingpaperholding device and lower part of carriage. Fig.4:isa sectionalelevation showing method of operating type-cylinder. Fig. 5 is asectional plan of the same. Fig. 6 shows the device for movingpaper-rolls. Fig. 7 is a section of sheet under type-cylinder. Fig. 8 isedge.

view of the same. Fig. 9 represents a transverse section of thepaper-roll and gears showing the same in contact and in position foruse; and Fig. 10 represents a similar view showing the rolls and gearseparated and held apart for the insertion of the paper.

Like figures refer to like parts.

A represents the frame composed of rails A, ends A and platen A.

B represents carriage for carryin the printing mechanism.

15 is the lower part of carriage, to which B is hinged at B the wholemoving on rails A, resting on wheels S, and guided by rollers or wheelsS.

B are castings forming ends of carriageframe.

13 are bars forming sides of carriage-frame.

0 represents the type-cylinder, formed of a thin shell of metal orrubber or both, and having the characters raised in certain localitieson the surface.

O" is a cylinder on which O fits.

O is a spur-gear turning on stud, which is fixed to sliding frame I,which drives cylinder 0*.

O is a spur-gear which drives O.

C is a spur-gear fixed at C and which is made to revolve by rack I),which slides on part of sliding frame I.

E is a handle and pointer combined, which is hinged or fastened to rackD. It is made in two parts, one part passing between Fand G, andprovided with a conical point for entering the holes in F, the otherpart forming a handle, the point of which is over the conical pointbelow, so that pointing to the letters printed on index G will bring thelower pointer into the proper hole to print from the correspondingcharacter on cylinder.

F is a perforated plate wit-h as many holes as there are characters onthe cylinder 0.

G is a plate placed above F, with printed characters representing thetype on cylinder and so arranged that the characters on each correspondwhen used.

II is an ink-roller, of felt or other porous substance, turning inbearings in form 1, and in contact with the type on cylinder.

I is a frame made in such a way that it will carry printing-cylinder andink-roller, and slide on the bars B".

J is a sheet of metal or other material placed below the cylinder andhinged at same point as the carriage at B J is a portion of the sheet,which is made of thin flexible or elastic material, preferablyindia-rubber, and perforated so that one type can protrude.

K and K are rollers, between which the papers to be printed isplaced,the bearingof K being in frame A The position of paper is shownin Fig. 2, Fig. Oshowing the paperroll and gears in contact the same asthey would be in use, the paper to be printed on between them andresting on platen A the gears being fixed on shafts of rollers K and K,as shown in Fig. 1 at K Fig. 10 shows the rolls and gears separated andheld apart by latch O catching under rail A for the insertion of thepaper.

K are spur-wheels gearing into each other, so that the rollers when incontact must turn together.

K is a wheel on end of K, by which the rollers are turned.

K4 is a plate swinging on shaft of roller K between K and A K is alever, the fulcrum of which is on a swinging plate K and which drops bygravity and rests on a pin or stop on the side of the said plate K Apoint on the up er edge of the lever K serves as a pawl to turn thewheel K catching into notches in the said plate when the said lever islifted.

K is a lever and pawl combined to act on K which drops to position shownin Fig. 6 when not in use.

L is a strip of metal forming apaper-holder and index for position ofcharacters printed, fixed to arms N on shaft 0. The bearings of roller Kare in N.

O is a lever on shaft 0 to separate the rollers.

P is a spring on B, bearing up against middle B to support cylinder awayfrom the paper.

R is-a pointer, fixed to B to indicate the place of the impression whenprinting.

To operate the machine, the paper is placed over the platen A andbetween the rollers by separatingthem and the paper-holder from the:platen by pressing on lever O. The printing mechanism, consisting ofthe cylinder in itsframe and carriage, is placed at any positionOllllllG rails-desirable. The position of the printing-cylinder beingindicated by pointer R, the handle E is moved to bring the index-pointto the desired character on index G,thereby'moving the cylinder up ordown lengthwise on bars B and rotating it by the rack andgear D C GO,thetwo movements combining to bring corresponding character oncylinder to the opening in sheet J, and a downward pressure presses thelower pointer of handle into hole in F, thereby holding the cylinderfirmly in place, and same pressure also carrying the whole framedownward, turning on hinge on carriage B until the type protrudingthrough J touches the paper. Re-

moving the pressure, the spring P lifts the frame, and the same processcan be'repeated with any other characters, the process of writ- 7 beingone-sixth of a revolution of rollers.

Having described the construction and operation of this type-writer,what I claim as new in type-writing mechanism, and desire to securebyLetters Patent, is-

l. The combination, in atype-writer, of a type-cylinder sliding in 'thedirection of its axis in a frame hinged'atright angles to axis ofcylinder, and the handle by which the cylinder and its frame are moved,and the cylinder rotated on its axis, and the pointer placed over andabove the cylinder, and the index located between the pointer and thecylinder, substantially as shown and described.

2. In a type-writer, thesliding frame'Lcontaining the type-cylinder C,with its toothed wheel, the axis of said cylinder being parallel to theline of movement of frame 'I, therack D, engaging with the toothed wheelso as-to rotate it, and the handle E, hinged to rack D at a right angleto the axis of the cylinder,

the whole combined and arranged to operate substantially as shownanddescribed.

3. In a type-Writer, the combination-of'the index-plate and theseparateindex above it,the double-pointed handle connected'to theprinting mechanism, the upper pointer pointing to the upper index andthe lower pointer to locate itself on the index-plate, all arrangedsubstantially as shownand described.

THOS. H ALL.

Witnesses:

M. O. KIMMENS, WILLIAM SLATTERY.

